Battle 14 Oct 1066 at which William the Conqueror, Duke of Normandy, defeated Harold, king of England. The site is 10 km/6 mi inland of Hastings, at Senlac, Sussex; it is marked by Battle Abbey. William, having laid a claim to the English throne, dominated the battle with archers supported by cavalry, breaking through ranks of infantry. Both sides suffered heavy losses but the death of Harold allowed William to conquer and become England's king. Having defeated an attempt by King Harald Hardreda of Norway at Stamford Bridge, Harold moved south with an army of 9,000 to counter the landing of the duke of Normandy at Pevensey Bay, Kent.